公开(公告)号：US3963869A

公开(公告)日：1976-06-15

申请号：US528727

申请日：1974-12-02

Applicant: James Lewis Caldwell

Inventor： James Lewis Caldwell

IPC: H04J3/06 ,  H04L7/04

CPC classification number: H04J3/0611 ,  H04L7/048

Abstract: A carrier system is described in which a number of pulse encoded signals are multiplexed on a single transmission and demultiplexed and decoded at a remote terminal for distribution to a number of receivers at that location. A similar multiplex system uses a separate return pair of transmitting signals in the opposite direction. The multiplexed signals on each transmission line are framed by means of a framing pulse in each frame having a value which insures a preselected parity for each frame. To make sure that parity discrepancies will exist for other pulse positions even under all "1s" and all "0s" conditions, a second bit position is filled with a randomly-valued bit.

Abstract translation: 描述了一种载波系统，其中多个脉冲编码信号被多路复用在单个传输上，并在远程终端进行解复用和解码，以分配到该位置的多个接收机。 类似的多路复用系统在相反方向上使用单独的传输信号对。 每个传输线上的多路复用信号借助于帧中的成帧脉冲被成帧，该帧具有确保每帧的预选奇偶校验值。 为了确保即使在所有“1”和所有“0”条件下，其他脉冲位置也将存在奇偶校验差异，第二位位置将被填充一个随机值。